Commit | Line | Data |
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54b6a1bd HY |
1 | /* |
2 | * Support for Intel AES-NI instructions. This file contains glue | |
3 | * code, the real AES implementation is in intel-aes_asm.S. | |
4 | * | |
5 | * Copyright (C) 2008, Intel Corp. | |
6 | * Author: Huang Ying <ying.huang@intel.com> | |
7 | * | |
0bd82f5f TS |
8 | * Added RFC4106 AES-GCM support for 128-bit keys under the AEAD |
9 | * interface for 64-bit kernels. | |
10 | * Authors: Adrian Hoban <adrian.hoban@intel.com> | |
11 | * Gabriele Paoloni <gabriele.paoloni@intel.com> | |
12 | * Tadeusz Struk (tadeusz.struk@intel.com) | |
13 | * Aidan O'Mahony (aidan.o.mahony@intel.com) | |
14 | * Copyright (c) 2010, Intel Corporation. | |
15 | * | |
54b6a1bd HY |
16 | * This program is free software; you can redistribute it and/or modify |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
20 | */ | |
21 | ||
22 | #include <linux/hardirq.h> | |
23 | #include <linux/types.h> | |
24 | #include <linux/crypto.h> | |
7c52d551 | 25 | #include <linux/module.h> |
54b6a1bd HY |
26 | #include <linux/err.h> |
27 | #include <crypto/algapi.h> | |
28 | #include <crypto/aes.h> | |
29 | #include <crypto/cryptd.h> | |
12387a46 | 30 | #include <crypto/ctr.h> |
023af608 JK |
31 | #include <crypto/b128ops.h> |
32 | #include <crypto/lrw.h> | |
33 | #include <crypto/xts.h> | |
3bd391f0 | 34 | #include <asm/cpu_device_id.h> |
54b6a1bd | 35 | #include <asm/i387.h> |
70ef2601 | 36 | #include <asm/crypto/aes.h> |
801201aa | 37 | #include <crypto/ablk_helper.h> |
0bd82f5f TS |
38 | #include <crypto/scatterwalk.h> |
39 | #include <crypto/internal/aead.h> | |
40 | #include <linux/workqueue.h> | |
41 | #include <linux/spinlock.h> | |
c456a9cd JK |
42 | #ifdef CONFIG_X86_64 |
43 | #include <asm/crypto/glue_helper.h> | |
44 | #endif | |
54b6a1bd | 45 | |
2cf4ac8b HY |
46 | #if defined(CONFIG_CRYPTO_PCBC) || defined(CONFIG_CRYPTO_PCBC_MODULE) |
47 | #define HAS_PCBC | |
48 | #endif | |
49 | ||
0bd82f5f TS |
50 | /* This data is stored at the end of the crypto_tfm struct. |
51 | * It's a type of per "session" data storage location. | |
52 | * This needs to be 16 byte aligned. | |
53 | */ | |
54 | struct aesni_rfc4106_gcm_ctx { | |
55 | u8 hash_subkey[16]; | |
56 | struct crypto_aes_ctx aes_key_expanded; | |
57 | u8 nonce[4]; | |
58 | struct cryptd_aead *cryptd_tfm; | |
59 | }; | |
60 | ||
61 | struct aesni_gcm_set_hash_subkey_result { | |
62 | int err; | |
63 | struct completion completion; | |
64 | }; | |
65 | ||
66 | struct aesni_hash_subkey_req_data { | |
67 | u8 iv[16]; | |
68 | struct aesni_gcm_set_hash_subkey_result result; | |
69 | struct scatterlist sg; | |
70 | }; | |
71 | ||
72 | #define AESNI_ALIGN (16) | |
54b6a1bd | 73 | #define AES_BLOCK_MASK (~(AES_BLOCK_SIZE-1)) |
0bd82f5f | 74 | #define RFC4106_HASH_SUBKEY_SIZE 16 |
54b6a1bd | 75 | |
023af608 JK |
76 | struct aesni_lrw_ctx { |
77 | struct lrw_table_ctx lrw_table; | |
78 | u8 raw_aes_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
79 | }; | |
80 | ||
81 | struct aesni_xts_ctx { | |
82 | u8 raw_tweak_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
83 | u8 raw_crypt_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
84 | }; | |
85 | ||
54b6a1bd HY |
86 | asmlinkage int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key, |
87 | unsigned int key_len); | |
88 | asmlinkage void aesni_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
89 | const u8 *in); | |
90 | asmlinkage void aesni_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
91 | const u8 *in); | |
92 | asmlinkage void aesni_ecb_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
93 | const u8 *in, unsigned int len); | |
94 | asmlinkage void aesni_ecb_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
95 | const u8 *in, unsigned int len); | |
96 | asmlinkage void aesni_cbc_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
97 | const u8 *in, unsigned int len, u8 *iv); | |
98 | asmlinkage void aesni_cbc_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
99 | const u8 *in, unsigned int len, u8 *iv); | |
9bed4aca RD |
100 | |
101 | int crypto_fpu_init(void); | |
102 | void crypto_fpu_exit(void); | |
103 | ||
d764593a TC |
104 | #define AVX_GEN2_OPTSIZE 640 |
105 | #define AVX_GEN4_OPTSIZE 4096 | |
106 | ||
0d258efb | 107 | #ifdef CONFIG_X86_64 |
12387a46 HY |
108 | asmlinkage void aesni_ctr_enc(struct crypto_aes_ctx *ctx, u8 *out, |
109 | const u8 *in, unsigned int len, u8 *iv); | |
54b6a1bd | 110 | |
c456a9cd JK |
111 | asmlinkage void aesni_xts_crypt8(struct crypto_aes_ctx *ctx, u8 *out, |
112 | const u8 *in, bool enc, u8 *iv); | |
113 | ||
0bd82f5f TS |
114 | /* asmlinkage void aesni_gcm_enc() |
115 | * void *ctx, AES Key schedule. Starts on a 16 byte boundary. | |
116 | * u8 *out, Ciphertext output. Encrypt in-place is allowed. | |
117 | * const u8 *in, Plaintext input | |
118 | * unsigned long plaintext_len, Length of data in bytes for encryption. | |
119 | * u8 *iv, Pre-counter block j0: 4 byte salt (from Security Association) | |
120 | * concatenated with 8 byte Initialisation Vector (from IPSec ESP | |
121 | * Payload) concatenated with 0x00000001. 16-byte aligned pointer. | |
122 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
123 | * const u8 *aad, Additional Authentication Data (AAD) | |
124 | * unsigned long aad_len, Length of AAD in bytes. With RFC4106 this | |
125 | * is going to be 8 or 12 bytes | |
126 | * u8 *auth_tag, Authenticated Tag output. | |
127 | * unsigned long auth_tag_len), Authenticated Tag Length in bytes. | |
128 | * Valid values are 16 (most likely), 12 or 8. | |
129 | */ | |
130 | asmlinkage void aesni_gcm_enc(void *ctx, u8 *out, | |
131 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
132 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
133 | u8 *auth_tag, unsigned long auth_tag_len); | |
134 | ||
135 | /* asmlinkage void aesni_gcm_dec() | |
136 | * void *ctx, AES Key schedule. Starts on a 16 byte boundary. | |
137 | * u8 *out, Plaintext output. Decrypt in-place is allowed. | |
138 | * const u8 *in, Ciphertext input | |
139 | * unsigned long ciphertext_len, Length of data in bytes for decryption. | |
140 | * u8 *iv, Pre-counter block j0: 4 byte salt (from Security Association) | |
141 | * concatenated with 8 byte Initialisation Vector (from IPSec ESP | |
142 | * Payload) concatenated with 0x00000001. 16-byte aligned pointer. | |
143 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
144 | * const u8 *aad, Additional Authentication Data (AAD) | |
145 | * unsigned long aad_len, Length of AAD in bytes. With RFC4106 this is going | |
146 | * to be 8 or 12 bytes | |
147 | * u8 *auth_tag, Authenticated Tag output. | |
148 | * unsigned long auth_tag_len) Authenticated Tag Length in bytes. | |
149 | * Valid values are 16 (most likely), 12 or 8. | |
150 | */ | |
151 | asmlinkage void aesni_gcm_dec(void *ctx, u8 *out, | |
152 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
153 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
154 | u8 *auth_tag, unsigned long auth_tag_len); | |
155 | ||
d764593a TC |
156 | |
157 | #ifdef CONFIG_AS_AVX | |
158 | /* | |
159 | * asmlinkage void aesni_gcm_precomp_avx_gen2() | |
160 | * gcm_data *my_ctx_data, context data | |
161 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
162 | */ | |
163 | asmlinkage void aesni_gcm_precomp_avx_gen2(void *my_ctx_data, u8 *hash_subkey); | |
164 | ||
165 | asmlinkage void aesni_gcm_enc_avx_gen2(void *ctx, u8 *out, | |
166 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
167 | const u8 *aad, unsigned long aad_len, | |
168 | u8 *auth_tag, unsigned long auth_tag_len); | |
169 | ||
170 | asmlinkage void aesni_gcm_dec_avx_gen2(void *ctx, u8 *out, | |
171 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
172 | const u8 *aad, unsigned long aad_len, | |
173 | u8 *auth_tag, unsigned long auth_tag_len); | |
174 | ||
175 | static void aesni_gcm_enc_avx(void *ctx, u8 *out, | |
176 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
177 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
178 | u8 *auth_tag, unsigned long auth_tag_len) | |
179 | { | |
180 | if (plaintext_len < AVX_GEN2_OPTSIZE) { | |
181 | aesni_gcm_enc(ctx, out, in, plaintext_len, iv, hash_subkey, aad, | |
182 | aad_len, auth_tag, auth_tag_len); | |
183 | } else { | |
184 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
185 | aesni_gcm_enc_avx_gen2(ctx, out, in, plaintext_len, iv, aad, | |
186 | aad_len, auth_tag, auth_tag_len); | |
187 | } | |
188 | } | |
189 | ||
190 | static void aesni_gcm_dec_avx(void *ctx, u8 *out, | |
191 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
192 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
193 | u8 *auth_tag, unsigned long auth_tag_len) | |
194 | { | |
195 | if (ciphertext_len < AVX_GEN2_OPTSIZE) { | |
196 | aesni_gcm_dec(ctx, out, in, ciphertext_len, iv, hash_subkey, aad, | |
197 | aad_len, auth_tag, auth_tag_len); | |
198 | } else { | |
199 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
200 | aesni_gcm_dec_avx_gen2(ctx, out, in, ciphertext_len, iv, aad, | |
201 | aad_len, auth_tag, auth_tag_len); | |
202 | } | |
203 | } | |
204 | #endif | |
205 | ||
206 | #ifdef CONFIG_AS_AVX2 | |
207 | /* | |
208 | * asmlinkage void aesni_gcm_precomp_avx_gen4() | |
209 | * gcm_data *my_ctx_data, context data | |
210 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
211 | */ | |
212 | asmlinkage void aesni_gcm_precomp_avx_gen4(void *my_ctx_data, u8 *hash_subkey); | |
213 | ||
214 | asmlinkage void aesni_gcm_enc_avx_gen4(void *ctx, u8 *out, | |
215 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
216 | const u8 *aad, unsigned long aad_len, | |
217 | u8 *auth_tag, unsigned long auth_tag_len); | |
218 | ||
219 | asmlinkage void aesni_gcm_dec_avx_gen4(void *ctx, u8 *out, | |
220 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
221 | const u8 *aad, unsigned long aad_len, | |
222 | u8 *auth_tag, unsigned long auth_tag_len); | |
223 | ||
224 | static void aesni_gcm_enc_avx2(void *ctx, u8 *out, | |
225 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
226 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
227 | u8 *auth_tag, unsigned long auth_tag_len) | |
228 | { | |
229 | if (plaintext_len < AVX_GEN2_OPTSIZE) { | |
230 | aesni_gcm_enc(ctx, out, in, plaintext_len, iv, hash_subkey, aad, | |
231 | aad_len, auth_tag, auth_tag_len); | |
232 | } else if (plaintext_len < AVX_GEN4_OPTSIZE) { | |
233 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
234 | aesni_gcm_enc_avx_gen2(ctx, out, in, plaintext_len, iv, aad, | |
235 | aad_len, auth_tag, auth_tag_len); | |
236 | } else { | |
237 | aesni_gcm_precomp_avx_gen4(ctx, hash_subkey); | |
238 | aesni_gcm_enc_avx_gen4(ctx, out, in, plaintext_len, iv, aad, | |
239 | aad_len, auth_tag, auth_tag_len); | |
240 | } | |
241 | } | |
242 | ||
243 | static void aesni_gcm_dec_avx2(void *ctx, u8 *out, | |
244 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
245 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
246 | u8 *auth_tag, unsigned long auth_tag_len) | |
247 | { | |
248 | if (ciphertext_len < AVX_GEN2_OPTSIZE) { | |
249 | aesni_gcm_dec(ctx, out, in, ciphertext_len, iv, hash_subkey, | |
250 | aad, aad_len, auth_tag, auth_tag_len); | |
251 | } else if (ciphertext_len < AVX_GEN4_OPTSIZE) { | |
252 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
253 | aesni_gcm_dec_avx_gen2(ctx, out, in, ciphertext_len, iv, aad, | |
254 | aad_len, auth_tag, auth_tag_len); | |
255 | } else { | |
256 | aesni_gcm_precomp_avx_gen4(ctx, hash_subkey); | |
257 | aesni_gcm_dec_avx_gen4(ctx, out, in, ciphertext_len, iv, aad, | |
258 | aad_len, auth_tag, auth_tag_len); | |
259 | } | |
260 | } | |
261 | #endif | |
262 | ||
263 | static void (*aesni_gcm_enc_tfm)(void *ctx, u8 *out, | |
264 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
265 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
266 | u8 *auth_tag, unsigned long auth_tag_len); | |
267 | ||
268 | static void (*aesni_gcm_dec_tfm)(void *ctx, u8 *out, | |
269 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
270 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
271 | u8 *auth_tag, unsigned long auth_tag_len); | |
272 | ||
0bd82f5f TS |
273 | static inline struct |
274 | aesni_rfc4106_gcm_ctx *aesni_rfc4106_gcm_ctx_get(struct crypto_aead *tfm) | |
275 | { | |
276 | return | |
277 | (struct aesni_rfc4106_gcm_ctx *) | |
278 | PTR_ALIGN((u8 *) | |
279 | crypto_tfm_ctx(crypto_aead_tfm(tfm)), AESNI_ALIGN); | |
280 | } | |
559ad0ff | 281 | #endif |
0bd82f5f | 282 | |
54b6a1bd HY |
283 | static inline struct crypto_aes_ctx *aes_ctx(void *raw_ctx) |
284 | { | |
285 | unsigned long addr = (unsigned long)raw_ctx; | |
286 | unsigned long align = AESNI_ALIGN; | |
287 | ||
288 | if (align <= crypto_tfm_ctx_alignment()) | |
289 | align = 1; | |
290 | return (struct crypto_aes_ctx *)ALIGN(addr, align); | |
291 | } | |
292 | ||
293 | static int aes_set_key_common(struct crypto_tfm *tfm, void *raw_ctx, | |
294 | const u8 *in_key, unsigned int key_len) | |
295 | { | |
296 | struct crypto_aes_ctx *ctx = aes_ctx(raw_ctx); | |
297 | u32 *flags = &tfm->crt_flags; | |
298 | int err; | |
299 | ||
300 | if (key_len != AES_KEYSIZE_128 && key_len != AES_KEYSIZE_192 && | |
301 | key_len != AES_KEYSIZE_256) { | |
302 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
303 | return -EINVAL; | |
304 | } | |
305 | ||
13b79b97 | 306 | if (!irq_fpu_usable()) |
54b6a1bd HY |
307 | err = crypto_aes_expand_key(ctx, in_key, key_len); |
308 | else { | |
309 | kernel_fpu_begin(); | |
310 | err = aesni_set_key(ctx, in_key, key_len); | |
311 | kernel_fpu_end(); | |
312 | } | |
313 | ||
314 | return err; | |
315 | } | |
316 | ||
317 | static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, | |
318 | unsigned int key_len) | |
319 | { | |
320 | return aes_set_key_common(tfm, crypto_tfm_ctx(tfm), in_key, key_len); | |
321 | } | |
322 | ||
323 | static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
324 | { | |
325 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
326 | ||
13b79b97 | 327 | if (!irq_fpu_usable()) |
54b6a1bd HY |
328 | crypto_aes_encrypt_x86(ctx, dst, src); |
329 | else { | |
330 | kernel_fpu_begin(); | |
331 | aesni_enc(ctx, dst, src); | |
332 | kernel_fpu_end(); | |
333 | } | |
334 | } | |
335 | ||
336 | static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
337 | { | |
338 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
339 | ||
13b79b97 | 340 | if (!irq_fpu_usable()) |
54b6a1bd HY |
341 | crypto_aes_decrypt_x86(ctx, dst, src); |
342 | else { | |
343 | kernel_fpu_begin(); | |
344 | aesni_dec(ctx, dst, src); | |
345 | kernel_fpu_end(); | |
346 | } | |
347 | } | |
348 | ||
2cf4ac8b HY |
349 | static void __aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
350 | { | |
351 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
352 | ||
353 | aesni_enc(ctx, dst, src); | |
354 | } | |
355 | ||
356 | static void __aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
357 | { | |
358 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
359 | ||
360 | aesni_dec(ctx, dst, src); | |
361 | } | |
362 | ||
54b6a1bd HY |
363 | static int ecb_encrypt(struct blkcipher_desc *desc, |
364 | struct scatterlist *dst, struct scatterlist *src, | |
365 | unsigned int nbytes) | |
366 | { | |
367 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
368 | struct blkcipher_walk walk; | |
369 | int err; | |
370 | ||
371 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
372 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 373 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
374 | |
375 | kernel_fpu_begin(); | |
376 | while ((nbytes = walk.nbytes)) { | |
377 | aesni_ecb_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
378 | nbytes & AES_BLOCK_MASK); | |
379 | nbytes &= AES_BLOCK_SIZE - 1; | |
380 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
381 | } | |
382 | kernel_fpu_end(); | |
383 | ||
384 | return err; | |
385 | } | |
386 | ||
387 | static int ecb_decrypt(struct blkcipher_desc *desc, | |
388 | struct scatterlist *dst, struct scatterlist *src, | |
389 | unsigned int nbytes) | |
390 | { | |
391 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
392 | struct blkcipher_walk walk; | |
393 | int err; | |
394 | ||
395 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
396 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 397 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
398 | |
399 | kernel_fpu_begin(); | |
400 | while ((nbytes = walk.nbytes)) { | |
401 | aesni_ecb_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
402 | nbytes & AES_BLOCK_MASK); | |
403 | nbytes &= AES_BLOCK_SIZE - 1; | |
404 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
405 | } | |
406 | kernel_fpu_end(); | |
407 | ||
408 | return err; | |
409 | } | |
410 | ||
54b6a1bd HY |
411 | static int cbc_encrypt(struct blkcipher_desc *desc, |
412 | struct scatterlist *dst, struct scatterlist *src, | |
413 | unsigned int nbytes) | |
414 | { | |
415 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
416 | struct blkcipher_walk walk; | |
417 | int err; | |
418 | ||
419 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
420 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 421 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
422 | |
423 | kernel_fpu_begin(); | |
424 | while ((nbytes = walk.nbytes)) { | |
425 | aesni_cbc_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
426 | nbytes & AES_BLOCK_MASK, walk.iv); | |
427 | nbytes &= AES_BLOCK_SIZE - 1; | |
428 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
429 | } | |
430 | kernel_fpu_end(); | |
431 | ||
432 | return err; | |
433 | } | |
434 | ||
435 | static int cbc_decrypt(struct blkcipher_desc *desc, | |
436 | struct scatterlist *dst, struct scatterlist *src, | |
437 | unsigned int nbytes) | |
438 | { | |
439 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
440 | struct blkcipher_walk walk; | |
441 | int err; | |
442 | ||
443 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
444 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 445 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
446 | |
447 | kernel_fpu_begin(); | |
448 | while ((nbytes = walk.nbytes)) { | |
449 | aesni_cbc_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
450 | nbytes & AES_BLOCK_MASK, walk.iv); | |
451 | nbytes &= AES_BLOCK_SIZE - 1; | |
452 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
453 | } | |
454 | kernel_fpu_end(); | |
455 | ||
456 | return err; | |
457 | } | |
458 | ||
0d258efb | 459 | #ifdef CONFIG_X86_64 |
12387a46 HY |
460 | static void ctr_crypt_final(struct crypto_aes_ctx *ctx, |
461 | struct blkcipher_walk *walk) | |
462 | { | |
463 | u8 *ctrblk = walk->iv; | |
464 | u8 keystream[AES_BLOCK_SIZE]; | |
465 | u8 *src = walk->src.virt.addr; | |
466 | u8 *dst = walk->dst.virt.addr; | |
467 | unsigned int nbytes = walk->nbytes; | |
468 | ||
469 | aesni_enc(ctx, keystream, ctrblk); | |
470 | crypto_xor(keystream, src, nbytes); | |
471 | memcpy(dst, keystream, nbytes); | |
472 | crypto_inc(ctrblk, AES_BLOCK_SIZE); | |
473 | } | |
474 | ||
475 | static int ctr_crypt(struct blkcipher_desc *desc, | |
476 | struct scatterlist *dst, struct scatterlist *src, | |
477 | unsigned int nbytes) | |
478 | { | |
479 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
480 | struct blkcipher_walk walk; | |
481 | int err; | |
482 | ||
483 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
484 | err = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE); | |
485 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
486 | ||
487 | kernel_fpu_begin(); | |
488 | while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) { | |
489 | aesni_ctr_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
490 | nbytes & AES_BLOCK_MASK, walk.iv); | |
491 | nbytes &= AES_BLOCK_SIZE - 1; | |
492 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
493 | } | |
494 | if (walk.nbytes) { | |
495 | ctr_crypt_final(ctx, &walk); | |
496 | err = blkcipher_walk_done(desc, &walk, 0); | |
497 | } | |
498 | kernel_fpu_end(); | |
499 | ||
500 | return err; | |
501 | } | |
0d258efb | 502 | #endif |
12387a46 | 503 | |
54b6a1bd HY |
504 | static int ablk_ecb_init(struct crypto_tfm *tfm) |
505 | { | |
ef45b834 | 506 | return ablk_init_common(tfm, "__driver-ecb-aes-aesni"); |
54b6a1bd HY |
507 | } |
508 | ||
54b6a1bd HY |
509 | static int ablk_cbc_init(struct crypto_tfm *tfm) |
510 | { | |
ef45b834 | 511 | return ablk_init_common(tfm, "__driver-cbc-aes-aesni"); |
54b6a1bd HY |
512 | } |
513 | ||
0d258efb | 514 | #ifdef CONFIG_X86_64 |
2cf4ac8b HY |
515 | static int ablk_ctr_init(struct crypto_tfm *tfm) |
516 | { | |
ef45b834 | 517 | return ablk_init_common(tfm, "__driver-ctr-aes-aesni"); |
2cf4ac8b HY |
518 | } |
519 | ||
0d258efb | 520 | #endif |
2cf4ac8b | 521 | |
2cf4ac8b HY |
522 | #ifdef HAS_PCBC |
523 | static int ablk_pcbc_init(struct crypto_tfm *tfm) | |
524 | { | |
ef45b834 | 525 | return ablk_init_common(tfm, "fpu(pcbc(__driver-aes-aesni))"); |
2cf4ac8b | 526 | } |
2cf4ac8b HY |
527 | #endif |
528 | ||
023af608 | 529 | static void lrw_xts_encrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) |
2cf4ac8b | 530 | { |
023af608 JK |
531 | aesni_ecb_enc(ctx, blks, blks, nbytes); |
532 | } | |
533 | ||
534 | static void lrw_xts_decrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) | |
535 | { | |
536 | aesni_ecb_dec(ctx, blks, blks, nbytes); | |
537 | } | |
538 | ||
539 | static int lrw_aesni_setkey(struct crypto_tfm *tfm, const u8 *key, | |
540 | unsigned int keylen) | |
541 | { | |
542 | struct aesni_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
543 | int err; | |
544 | ||
545 | err = aes_set_key_common(tfm, ctx->raw_aes_ctx, key, | |
546 | keylen - AES_BLOCK_SIZE); | |
547 | if (err) | |
548 | return err; | |
549 | ||
550 | return lrw_init_table(&ctx->lrw_table, key + keylen - AES_BLOCK_SIZE); | |
551 | } | |
552 | ||
553 | static void lrw_aesni_exit_tfm(struct crypto_tfm *tfm) | |
554 | { | |
555 | struct aesni_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
556 | ||
557 | lrw_free_table(&ctx->lrw_table); | |
558 | } | |
559 | ||
560 | static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
561 | struct scatterlist *src, unsigned int nbytes) | |
562 | { | |
563 | struct aesni_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
564 | be128 buf[8]; | |
565 | struct lrw_crypt_req req = { | |
566 | .tbuf = buf, | |
567 | .tbuflen = sizeof(buf), | |
568 | ||
569 | .table_ctx = &ctx->lrw_table, | |
570 | .crypt_ctx = aes_ctx(ctx->raw_aes_ctx), | |
571 | .crypt_fn = lrw_xts_encrypt_callback, | |
572 | }; | |
573 | int ret; | |
574 | ||
575 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
576 | ||
577 | kernel_fpu_begin(); | |
578 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
579 | kernel_fpu_end(); | |
580 | ||
581 | return ret; | |
582 | } | |
583 | ||
584 | static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
585 | struct scatterlist *src, unsigned int nbytes) | |
586 | { | |
587 | struct aesni_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
588 | be128 buf[8]; | |
589 | struct lrw_crypt_req req = { | |
590 | .tbuf = buf, | |
591 | .tbuflen = sizeof(buf), | |
592 | ||
593 | .table_ctx = &ctx->lrw_table, | |
594 | .crypt_ctx = aes_ctx(ctx->raw_aes_ctx), | |
595 | .crypt_fn = lrw_xts_decrypt_callback, | |
596 | }; | |
597 | int ret; | |
598 | ||
599 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
600 | ||
601 | kernel_fpu_begin(); | |
602 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
603 | kernel_fpu_end(); | |
604 | ||
605 | return ret; | |
606 | } | |
607 | ||
608 | static int xts_aesni_setkey(struct crypto_tfm *tfm, const u8 *key, | |
609 | unsigned int keylen) | |
610 | { | |
611 | struct aesni_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
612 | u32 *flags = &tfm->crt_flags; | |
613 | int err; | |
614 | ||
615 | /* key consists of keys of equal size concatenated, therefore | |
616 | * the length must be even | |
617 | */ | |
618 | if (keylen % 2) { | |
619 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
620 | return -EINVAL; | |
621 | } | |
622 | ||
623 | /* first half of xts-key is for crypt */ | |
624 | err = aes_set_key_common(tfm, ctx->raw_crypt_ctx, key, keylen / 2); | |
625 | if (err) | |
626 | return err; | |
627 | ||
628 | /* second half of xts-key is for tweak */ | |
629 | return aes_set_key_common(tfm, ctx->raw_tweak_ctx, key + keylen / 2, | |
630 | keylen / 2); | |
631 | } | |
632 | ||
633 | ||
32bec973 JK |
634 | static void aesni_xts_tweak(void *ctx, u8 *out, const u8 *in) |
635 | { | |
636 | aesni_enc(ctx, out, in); | |
637 | } | |
638 | ||
c456a9cd JK |
639 | #ifdef CONFIG_X86_64 |
640 | ||
641 | static void aesni_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
642 | { | |
643 | glue_xts_crypt_128bit_one(ctx, dst, src, iv, GLUE_FUNC_CAST(aesni_enc)); | |
644 | } | |
645 | ||
646 | static void aesni_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
647 | { | |
648 | glue_xts_crypt_128bit_one(ctx, dst, src, iv, GLUE_FUNC_CAST(aesni_dec)); | |
649 | } | |
650 | ||
651 | static void aesni_xts_enc8(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
652 | { | |
653 | aesni_xts_crypt8(ctx, (u8 *)dst, (const u8 *)src, true, (u8 *)iv); | |
654 | } | |
655 | ||
656 | static void aesni_xts_dec8(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
657 | { | |
658 | aesni_xts_crypt8(ctx, (u8 *)dst, (const u8 *)src, false, (u8 *)iv); | |
659 | } | |
660 | ||
661 | static const struct common_glue_ctx aesni_enc_xts = { | |
662 | .num_funcs = 2, | |
663 | .fpu_blocks_limit = 1, | |
664 | ||
665 | .funcs = { { | |
666 | .num_blocks = 8, | |
667 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_enc8) } | |
668 | }, { | |
669 | .num_blocks = 1, | |
670 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_enc) } | |
671 | } } | |
672 | }; | |
673 | ||
674 | static const struct common_glue_ctx aesni_dec_xts = { | |
675 | .num_funcs = 2, | |
676 | .fpu_blocks_limit = 1, | |
677 | ||
678 | .funcs = { { | |
679 | .num_blocks = 8, | |
680 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_dec8) } | |
681 | }, { | |
682 | .num_blocks = 1, | |
683 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_dec) } | |
684 | } } | |
685 | }; | |
686 | ||
687 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
688 | struct scatterlist *src, unsigned int nbytes) | |
689 | { | |
690 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
691 | ||
692 | return glue_xts_crypt_128bit(&aesni_enc_xts, desc, dst, src, nbytes, | |
693 | XTS_TWEAK_CAST(aesni_xts_tweak), | |
694 | aes_ctx(ctx->raw_tweak_ctx), | |
695 | aes_ctx(ctx->raw_crypt_ctx)); | |
696 | } | |
697 | ||
698 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
699 | struct scatterlist *src, unsigned int nbytes) | |
700 | { | |
701 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
702 | ||
703 | return glue_xts_crypt_128bit(&aesni_dec_xts, desc, dst, src, nbytes, | |
704 | XTS_TWEAK_CAST(aesni_xts_tweak), | |
705 | aes_ctx(ctx->raw_tweak_ctx), | |
706 | aes_ctx(ctx->raw_crypt_ctx)); | |
707 | } | |
708 | ||
709 | #else | |
710 | ||
023af608 JK |
711 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
712 | struct scatterlist *src, unsigned int nbytes) | |
713 | { | |
714 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
715 | be128 buf[8]; | |
716 | struct xts_crypt_req req = { | |
717 | .tbuf = buf, | |
718 | .tbuflen = sizeof(buf), | |
719 | ||
720 | .tweak_ctx = aes_ctx(ctx->raw_tweak_ctx), | |
32bec973 | 721 | .tweak_fn = aesni_xts_tweak, |
023af608 JK |
722 | .crypt_ctx = aes_ctx(ctx->raw_crypt_ctx), |
723 | .crypt_fn = lrw_xts_encrypt_callback, | |
724 | }; | |
725 | int ret; | |
726 | ||
727 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
728 | ||
729 | kernel_fpu_begin(); | |
730 | ret = xts_crypt(desc, dst, src, nbytes, &req); | |
731 | kernel_fpu_end(); | |
732 | ||
733 | return ret; | |
734 | } | |
735 | ||
736 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
737 | struct scatterlist *src, unsigned int nbytes) | |
738 | { | |
739 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
740 | be128 buf[8]; | |
741 | struct xts_crypt_req req = { | |
742 | .tbuf = buf, | |
743 | .tbuflen = sizeof(buf), | |
744 | ||
745 | .tweak_ctx = aes_ctx(ctx->raw_tweak_ctx), | |
32bec973 | 746 | .tweak_fn = aesni_xts_tweak, |
023af608 JK |
747 | .crypt_ctx = aes_ctx(ctx->raw_crypt_ctx), |
748 | .crypt_fn = lrw_xts_decrypt_callback, | |
749 | }; | |
750 | int ret; | |
751 | ||
752 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
753 | ||
754 | kernel_fpu_begin(); | |
755 | ret = xts_crypt(desc, dst, src, nbytes, &req); | |
756 | kernel_fpu_end(); | |
757 | ||
758 | return ret; | |
2cf4ac8b | 759 | } |
2cf4ac8b | 760 | |
c456a9cd JK |
761 | #endif |
762 | ||
559ad0ff | 763 | #ifdef CONFIG_X86_64 |
0bd82f5f TS |
764 | static int rfc4106_init(struct crypto_tfm *tfm) |
765 | { | |
766 | struct cryptd_aead *cryptd_tfm; | |
767 | struct aesni_rfc4106_gcm_ctx *ctx = (struct aesni_rfc4106_gcm_ctx *) | |
768 | PTR_ALIGN((u8 *)crypto_tfm_ctx(tfm), AESNI_ALIGN); | |
60af520c TS |
769 | struct crypto_aead *cryptd_child; |
770 | struct aesni_rfc4106_gcm_ctx *child_ctx; | |
0bd82f5f TS |
771 | cryptd_tfm = cryptd_alloc_aead("__driver-gcm-aes-aesni", 0, 0); |
772 | if (IS_ERR(cryptd_tfm)) | |
773 | return PTR_ERR(cryptd_tfm); | |
60af520c TS |
774 | |
775 | cryptd_child = cryptd_aead_child(cryptd_tfm); | |
776 | child_ctx = aesni_rfc4106_gcm_ctx_get(cryptd_child); | |
777 | memcpy(child_ctx, ctx, sizeof(*ctx)); | |
0bd82f5f TS |
778 | ctx->cryptd_tfm = cryptd_tfm; |
779 | tfm->crt_aead.reqsize = sizeof(struct aead_request) | |
780 | + crypto_aead_reqsize(&cryptd_tfm->base); | |
781 | return 0; | |
782 | } | |
783 | ||
784 | static void rfc4106_exit(struct crypto_tfm *tfm) | |
785 | { | |
786 | struct aesni_rfc4106_gcm_ctx *ctx = | |
787 | (struct aesni_rfc4106_gcm_ctx *) | |
788 | PTR_ALIGN((u8 *)crypto_tfm_ctx(tfm), AESNI_ALIGN); | |
789 | if (!IS_ERR(ctx->cryptd_tfm)) | |
790 | cryptd_free_aead(ctx->cryptd_tfm); | |
791 | return; | |
792 | } | |
793 | ||
794 | static void | |
795 | rfc4106_set_hash_subkey_done(struct crypto_async_request *req, int err) | |
796 | { | |
797 | struct aesni_gcm_set_hash_subkey_result *result = req->data; | |
798 | ||
799 | if (err == -EINPROGRESS) | |
800 | return; | |
801 | result->err = err; | |
802 | complete(&result->completion); | |
803 | } | |
804 | ||
805 | static int | |
806 | rfc4106_set_hash_subkey(u8 *hash_subkey, const u8 *key, unsigned int key_len) | |
807 | { | |
808 | struct crypto_ablkcipher *ctr_tfm; | |
809 | struct ablkcipher_request *req; | |
810 | int ret = -EINVAL; | |
811 | struct aesni_hash_subkey_req_data *req_data; | |
812 | ||
813 | ctr_tfm = crypto_alloc_ablkcipher("ctr(aes)", 0, 0); | |
814 | if (IS_ERR(ctr_tfm)) | |
815 | return PTR_ERR(ctr_tfm); | |
816 | ||
817 | crypto_ablkcipher_clear_flags(ctr_tfm, ~0); | |
818 | ||
819 | ret = crypto_ablkcipher_setkey(ctr_tfm, key, key_len); | |
7efd95f6 | 820 | if (ret) |
fc9044e2 | 821 | goto out_free_ablkcipher; |
0bd82f5f | 822 | |
fc9044e2 | 823 | ret = -ENOMEM; |
0bd82f5f | 824 | req = ablkcipher_request_alloc(ctr_tfm, GFP_KERNEL); |
fc9044e2 | 825 | if (!req) |
7efd95f6 | 826 | goto out_free_ablkcipher; |
0bd82f5f TS |
827 | |
828 | req_data = kmalloc(sizeof(*req_data), GFP_KERNEL); | |
fc9044e2 | 829 | if (!req_data) |
7efd95f6 | 830 | goto out_free_request; |
fc9044e2 | 831 | |
0bd82f5f TS |
832 | memset(req_data->iv, 0, sizeof(req_data->iv)); |
833 | ||
834 | /* Clear the data in the hash sub key container to zero.*/ | |
835 | /* We want to cipher all zeros to create the hash sub key. */ | |
836 | memset(hash_subkey, 0, RFC4106_HASH_SUBKEY_SIZE); | |
837 | ||
838 | init_completion(&req_data->result.completion); | |
839 | sg_init_one(&req_data->sg, hash_subkey, RFC4106_HASH_SUBKEY_SIZE); | |
840 | ablkcipher_request_set_tfm(req, ctr_tfm); | |
841 | ablkcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP | | |
842 | CRYPTO_TFM_REQ_MAY_BACKLOG, | |
843 | rfc4106_set_hash_subkey_done, | |
844 | &req_data->result); | |
845 | ||
846 | ablkcipher_request_set_crypt(req, &req_data->sg, | |
847 | &req_data->sg, RFC4106_HASH_SUBKEY_SIZE, req_data->iv); | |
848 | ||
849 | ret = crypto_ablkcipher_encrypt(req); | |
850 | if (ret == -EINPROGRESS || ret == -EBUSY) { | |
851 | ret = wait_for_completion_interruptible | |
852 | (&req_data->result.completion); | |
853 | if (!ret) | |
854 | ret = req_data->result.err; | |
855 | } | |
fc9044e2 | 856 | kfree(req_data); |
7efd95f6 | 857 | out_free_request: |
0bd82f5f | 858 | ablkcipher_request_free(req); |
7efd95f6 | 859 | out_free_ablkcipher: |
0bd82f5f TS |
860 | crypto_free_ablkcipher(ctr_tfm); |
861 | return ret; | |
862 | } | |
863 | ||
864 | static int rfc4106_set_key(struct crypto_aead *parent, const u8 *key, | |
865 | unsigned int key_len) | |
866 | { | |
867 | int ret = 0; | |
868 | struct crypto_tfm *tfm = crypto_aead_tfm(parent); | |
869 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(parent); | |
60af520c TS |
870 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); |
871 | struct aesni_rfc4106_gcm_ctx *child_ctx = | |
872 | aesni_rfc4106_gcm_ctx_get(cryptd_child); | |
bf084d8f | 873 | u8 *new_key_align, *new_key_mem = NULL; |
0bd82f5f TS |
874 | |
875 | if (key_len < 4) { | |
876 | crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
877 | return -EINVAL; | |
878 | } | |
879 | /*Account for 4 byte nonce at the end.*/ | |
880 | key_len -= 4; | |
881 | if (key_len != AES_KEYSIZE_128) { | |
882 | crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
883 | return -EINVAL; | |
884 | } | |
885 | ||
886 | memcpy(ctx->nonce, key + key_len, sizeof(ctx->nonce)); | |
887 | /*This must be on a 16 byte boundary!*/ | |
888 | if ((unsigned long)(&(ctx->aes_key_expanded.key_enc[0])) % AESNI_ALIGN) | |
889 | return -EINVAL; | |
890 | ||
891 | if ((unsigned long)key % AESNI_ALIGN) { | |
892 | /*key is not aligned: use an auxuliar aligned pointer*/ | |
893 | new_key_mem = kmalloc(key_len+AESNI_ALIGN, GFP_KERNEL); | |
894 | if (!new_key_mem) | |
895 | return -ENOMEM; | |
896 | ||
bf084d8f MB |
897 | new_key_align = PTR_ALIGN(new_key_mem, AESNI_ALIGN); |
898 | memcpy(new_key_align, key, key_len); | |
899 | key = new_key_align; | |
0bd82f5f TS |
900 | } |
901 | ||
902 | if (!irq_fpu_usable()) | |
903 | ret = crypto_aes_expand_key(&(ctx->aes_key_expanded), | |
904 | key, key_len); | |
905 | else { | |
906 | kernel_fpu_begin(); | |
907 | ret = aesni_set_key(&(ctx->aes_key_expanded), key, key_len); | |
908 | kernel_fpu_end(); | |
909 | } | |
910 | /*This must be on a 16 byte boundary!*/ | |
911 | if ((unsigned long)(&(ctx->hash_subkey[0])) % AESNI_ALIGN) { | |
912 | ret = -EINVAL; | |
913 | goto exit; | |
914 | } | |
915 | ret = rfc4106_set_hash_subkey(ctx->hash_subkey, key, key_len); | |
60af520c | 916 | memcpy(child_ctx, ctx, sizeof(*ctx)); |
0bd82f5f TS |
917 | exit: |
918 | kfree(new_key_mem); | |
919 | return ret; | |
920 | } | |
921 | ||
922 | /* This is the Integrity Check Value (aka the authentication tag length and can | |
923 | * be 8, 12 or 16 bytes long. */ | |
924 | static int rfc4106_set_authsize(struct crypto_aead *parent, | |
925 | unsigned int authsize) | |
926 | { | |
927 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(parent); | |
928 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); | |
929 | ||
930 | switch (authsize) { | |
931 | case 8: | |
932 | case 12: | |
933 | case 16: | |
934 | break; | |
935 | default: | |
936 | return -EINVAL; | |
937 | } | |
938 | crypto_aead_crt(parent)->authsize = authsize; | |
939 | crypto_aead_crt(cryptd_child)->authsize = authsize; | |
940 | return 0; | |
941 | } | |
942 | ||
943 | static int rfc4106_encrypt(struct aead_request *req) | |
944 | { | |
945 | int ret; | |
946 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
947 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
0bd82f5f TS |
948 | |
949 | if (!irq_fpu_usable()) { | |
950 | struct aead_request *cryptd_req = | |
951 | (struct aead_request *) aead_request_ctx(req); | |
952 | memcpy(cryptd_req, req, sizeof(*req)); | |
953 | aead_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); | |
954 | return crypto_aead_encrypt(cryptd_req); | |
955 | } else { | |
60af520c | 956 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); |
0bd82f5f TS |
957 | kernel_fpu_begin(); |
958 | ret = cryptd_child->base.crt_aead.encrypt(req); | |
959 | kernel_fpu_end(); | |
960 | return ret; | |
961 | } | |
962 | } | |
963 | ||
964 | static int rfc4106_decrypt(struct aead_request *req) | |
965 | { | |
966 | int ret; | |
967 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
968 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
0bd82f5f TS |
969 | |
970 | if (!irq_fpu_usable()) { | |
971 | struct aead_request *cryptd_req = | |
972 | (struct aead_request *) aead_request_ctx(req); | |
973 | memcpy(cryptd_req, req, sizeof(*req)); | |
974 | aead_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); | |
975 | return crypto_aead_decrypt(cryptd_req); | |
976 | } else { | |
60af520c | 977 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); |
0bd82f5f TS |
978 | kernel_fpu_begin(); |
979 | ret = cryptd_child->base.crt_aead.decrypt(req); | |
980 | kernel_fpu_end(); | |
981 | return ret; | |
982 | } | |
983 | } | |
984 | ||
0bd82f5f TS |
985 | static int __driver_rfc4106_encrypt(struct aead_request *req) |
986 | { | |
987 | u8 one_entry_in_sg = 0; | |
988 | u8 *src, *dst, *assoc; | |
989 | __be32 counter = cpu_to_be32(1); | |
990 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
991 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
992 | void *aes_ctx = &(ctx->aes_key_expanded); | |
993 | unsigned long auth_tag_len = crypto_aead_authsize(tfm); | |
994 | u8 iv_tab[16+AESNI_ALIGN]; | |
995 | u8* iv = (u8 *) PTR_ALIGN((u8 *)iv_tab, AESNI_ALIGN); | |
996 | struct scatter_walk src_sg_walk; | |
997 | struct scatter_walk assoc_sg_walk; | |
998 | struct scatter_walk dst_sg_walk; | |
999 | unsigned int i; | |
1000 | ||
1001 | /* Assuming we are supporting rfc4106 64-bit extended */ | |
1002 | /* sequence numbers We need to have the AAD length equal */ | |
1003 | /* to 8 or 12 bytes */ | |
1004 | if (unlikely(req->assoclen != 8 && req->assoclen != 12)) | |
1005 | return -EINVAL; | |
1006 | /* IV below built */ | |
1007 | for (i = 0; i < 4; i++) | |
1008 | *(iv+i) = ctx->nonce[i]; | |
1009 | for (i = 0; i < 8; i++) | |
1010 | *(iv+4+i) = req->iv[i]; | |
1011 | *((__be32 *)(iv+12)) = counter; | |
1012 | ||
1013 | if ((sg_is_last(req->src)) && (sg_is_last(req->assoc))) { | |
1014 | one_entry_in_sg = 1; | |
1015 | scatterwalk_start(&src_sg_walk, req->src); | |
1016 | scatterwalk_start(&assoc_sg_walk, req->assoc); | |
8fd75e12 CW |
1017 | src = scatterwalk_map(&src_sg_walk); |
1018 | assoc = scatterwalk_map(&assoc_sg_walk); | |
0bd82f5f TS |
1019 | dst = src; |
1020 | if (unlikely(req->src != req->dst)) { | |
1021 | scatterwalk_start(&dst_sg_walk, req->dst); | |
8fd75e12 | 1022 | dst = scatterwalk_map(&dst_sg_walk); |
0bd82f5f TS |
1023 | } |
1024 | ||
1025 | } else { | |
1026 | /* Allocate memory for src, dst, assoc */ | |
1027 | src = kmalloc(req->cryptlen + auth_tag_len + req->assoclen, | |
1028 | GFP_ATOMIC); | |
1029 | if (unlikely(!src)) | |
1030 | return -ENOMEM; | |
1031 | assoc = (src + req->cryptlen + auth_tag_len); | |
1032 | scatterwalk_map_and_copy(src, req->src, 0, req->cryptlen, 0); | |
1033 | scatterwalk_map_and_copy(assoc, req->assoc, 0, | |
1034 | req->assoclen, 0); | |
1035 | dst = src; | |
1036 | } | |
1037 | ||
d764593a | 1038 | aesni_gcm_enc_tfm(aes_ctx, dst, src, (unsigned long)req->cryptlen, iv, |
0bd82f5f TS |
1039 | ctx->hash_subkey, assoc, (unsigned long)req->assoclen, dst |
1040 | + ((unsigned long)req->cryptlen), auth_tag_len); | |
1041 | ||
1042 | /* The authTag (aka the Integrity Check Value) needs to be written | |
1043 | * back to the packet. */ | |
1044 | if (one_entry_in_sg) { | |
1045 | if (unlikely(req->src != req->dst)) { | |
8fd75e12 | 1046 | scatterwalk_unmap(dst); |
0bd82f5f TS |
1047 | scatterwalk_done(&dst_sg_walk, 0, 0); |
1048 | } | |
8fd75e12 CW |
1049 | scatterwalk_unmap(src); |
1050 | scatterwalk_unmap(assoc); | |
0bd82f5f TS |
1051 | scatterwalk_done(&src_sg_walk, 0, 0); |
1052 | scatterwalk_done(&assoc_sg_walk, 0, 0); | |
1053 | } else { | |
1054 | scatterwalk_map_and_copy(dst, req->dst, 0, | |
1055 | req->cryptlen + auth_tag_len, 1); | |
1056 | kfree(src); | |
1057 | } | |
1058 | return 0; | |
1059 | } | |
1060 | ||
1061 | static int __driver_rfc4106_decrypt(struct aead_request *req) | |
1062 | { | |
1063 | u8 one_entry_in_sg = 0; | |
1064 | u8 *src, *dst, *assoc; | |
1065 | unsigned long tempCipherLen = 0; | |
1066 | __be32 counter = cpu_to_be32(1); | |
1067 | int retval = 0; | |
1068 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
1069 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
1070 | void *aes_ctx = &(ctx->aes_key_expanded); | |
1071 | unsigned long auth_tag_len = crypto_aead_authsize(tfm); | |
1072 | u8 iv_and_authTag[32+AESNI_ALIGN]; | |
1073 | u8 *iv = (u8 *) PTR_ALIGN((u8 *)iv_and_authTag, AESNI_ALIGN); | |
1074 | u8 *authTag = iv + 16; | |
1075 | struct scatter_walk src_sg_walk; | |
1076 | struct scatter_walk assoc_sg_walk; | |
1077 | struct scatter_walk dst_sg_walk; | |
1078 | unsigned int i; | |
1079 | ||
1080 | if (unlikely((req->cryptlen < auth_tag_len) || | |
1081 | (req->assoclen != 8 && req->assoclen != 12))) | |
1082 | return -EINVAL; | |
1083 | /* Assuming we are supporting rfc4106 64-bit extended */ | |
1084 | /* sequence numbers We need to have the AAD length */ | |
1085 | /* equal to 8 or 12 bytes */ | |
1086 | ||
1087 | tempCipherLen = (unsigned long)(req->cryptlen - auth_tag_len); | |
1088 | /* IV below built */ | |
1089 | for (i = 0; i < 4; i++) | |
1090 | *(iv+i) = ctx->nonce[i]; | |
1091 | for (i = 0; i < 8; i++) | |
1092 | *(iv+4+i) = req->iv[i]; | |
1093 | *((__be32 *)(iv+12)) = counter; | |
1094 | ||
1095 | if ((sg_is_last(req->src)) && (sg_is_last(req->assoc))) { | |
1096 | one_entry_in_sg = 1; | |
1097 | scatterwalk_start(&src_sg_walk, req->src); | |
1098 | scatterwalk_start(&assoc_sg_walk, req->assoc); | |
8fd75e12 CW |
1099 | src = scatterwalk_map(&src_sg_walk); |
1100 | assoc = scatterwalk_map(&assoc_sg_walk); | |
0bd82f5f TS |
1101 | dst = src; |
1102 | if (unlikely(req->src != req->dst)) { | |
1103 | scatterwalk_start(&dst_sg_walk, req->dst); | |
8fd75e12 | 1104 | dst = scatterwalk_map(&dst_sg_walk); |
0bd82f5f TS |
1105 | } |
1106 | ||
1107 | } else { | |
1108 | /* Allocate memory for src, dst, assoc */ | |
1109 | src = kmalloc(req->cryptlen + req->assoclen, GFP_ATOMIC); | |
1110 | if (!src) | |
1111 | return -ENOMEM; | |
1112 | assoc = (src + req->cryptlen + auth_tag_len); | |
1113 | scatterwalk_map_and_copy(src, req->src, 0, req->cryptlen, 0); | |
1114 | scatterwalk_map_and_copy(assoc, req->assoc, 0, | |
1115 | req->assoclen, 0); | |
1116 | dst = src; | |
1117 | } | |
1118 | ||
d764593a | 1119 | aesni_gcm_dec_tfm(aes_ctx, dst, src, tempCipherLen, iv, |
0bd82f5f TS |
1120 | ctx->hash_subkey, assoc, (unsigned long)req->assoclen, |
1121 | authTag, auth_tag_len); | |
1122 | ||
1123 | /* Compare generated tag with passed in tag. */ | |
fed28611 | 1124 | retval = crypto_memneq(src + tempCipherLen, authTag, auth_tag_len) ? |
0bd82f5f TS |
1125 | -EBADMSG : 0; |
1126 | ||
1127 | if (one_entry_in_sg) { | |
1128 | if (unlikely(req->src != req->dst)) { | |
8fd75e12 | 1129 | scatterwalk_unmap(dst); |
0bd82f5f TS |
1130 | scatterwalk_done(&dst_sg_walk, 0, 0); |
1131 | } | |
8fd75e12 CW |
1132 | scatterwalk_unmap(src); |
1133 | scatterwalk_unmap(assoc); | |
0bd82f5f TS |
1134 | scatterwalk_done(&src_sg_walk, 0, 0); |
1135 | scatterwalk_done(&assoc_sg_walk, 0, 0); | |
1136 | } else { | |
1137 | scatterwalk_map_and_copy(dst, req->dst, 0, req->cryptlen, 1); | |
1138 | kfree(src); | |
1139 | } | |
1140 | return retval; | |
1141 | } | |
fa46ccb8 | 1142 | #endif |
0bd82f5f | 1143 | |
fa46ccb8 JK |
1144 | static struct crypto_alg aesni_algs[] = { { |
1145 | .cra_name = "aes", | |
1146 | .cra_driver_name = "aes-aesni", | |
1147 | .cra_priority = 300, | |
1148 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, | |
1149 | .cra_blocksize = AES_BLOCK_SIZE, | |
1150 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1151 | AESNI_ALIGN - 1, | |
1152 | .cra_alignmask = 0, | |
1153 | .cra_module = THIS_MODULE, | |
1154 | .cra_u = { | |
1155 | .cipher = { | |
1156 | .cia_min_keysize = AES_MIN_KEY_SIZE, | |
1157 | .cia_max_keysize = AES_MAX_KEY_SIZE, | |
1158 | .cia_setkey = aes_set_key, | |
1159 | .cia_encrypt = aes_encrypt, | |
1160 | .cia_decrypt = aes_decrypt | |
1161 | } | |
1162 | } | |
1163 | }, { | |
1164 | .cra_name = "__aes-aesni", | |
1165 | .cra_driver_name = "__driver-aes-aesni", | |
1166 | .cra_priority = 0, | |
1167 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, | |
1168 | .cra_blocksize = AES_BLOCK_SIZE, | |
1169 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1170 | AESNI_ALIGN - 1, | |
1171 | .cra_alignmask = 0, | |
1172 | .cra_module = THIS_MODULE, | |
1173 | .cra_u = { | |
1174 | .cipher = { | |
1175 | .cia_min_keysize = AES_MIN_KEY_SIZE, | |
1176 | .cia_max_keysize = AES_MAX_KEY_SIZE, | |
1177 | .cia_setkey = aes_set_key, | |
1178 | .cia_encrypt = __aes_encrypt, | |
1179 | .cia_decrypt = __aes_decrypt | |
1180 | } | |
1181 | } | |
1182 | }, { | |
1183 | .cra_name = "__ecb-aes-aesni", | |
1184 | .cra_driver_name = "__driver-ecb-aes-aesni", | |
1185 | .cra_priority = 0, | |
1186 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1187 | .cra_blocksize = AES_BLOCK_SIZE, | |
1188 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1189 | AESNI_ALIGN - 1, | |
1190 | .cra_alignmask = 0, | |
1191 | .cra_type = &crypto_blkcipher_type, | |
1192 | .cra_module = THIS_MODULE, | |
1193 | .cra_u = { | |
1194 | .blkcipher = { | |
1195 | .min_keysize = AES_MIN_KEY_SIZE, | |
1196 | .max_keysize = AES_MAX_KEY_SIZE, | |
1197 | .setkey = aes_set_key, | |
1198 | .encrypt = ecb_encrypt, | |
1199 | .decrypt = ecb_decrypt, | |
1200 | }, | |
1201 | }, | |
1202 | }, { | |
1203 | .cra_name = "__cbc-aes-aesni", | |
1204 | .cra_driver_name = "__driver-cbc-aes-aesni", | |
1205 | .cra_priority = 0, | |
1206 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1207 | .cra_blocksize = AES_BLOCK_SIZE, | |
1208 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1209 | AESNI_ALIGN - 1, | |
1210 | .cra_alignmask = 0, | |
1211 | .cra_type = &crypto_blkcipher_type, | |
1212 | .cra_module = THIS_MODULE, | |
1213 | .cra_u = { | |
1214 | .blkcipher = { | |
1215 | .min_keysize = AES_MIN_KEY_SIZE, | |
1216 | .max_keysize = AES_MAX_KEY_SIZE, | |
1217 | .setkey = aes_set_key, | |
1218 | .encrypt = cbc_encrypt, | |
1219 | .decrypt = cbc_decrypt, | |
1220 | }, | |
1221 | }, | |
1222 | }, { | |
1223 | .cra_name = "ecb(aes)", | |
1224 | .cra_driver_name = "ecb-aes-aesni", | |
1225 | .cra_priority = 400, | |
1226 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1227 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1228 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1229 | .cra_alignmask = 0, |
1230 | .cra_type = &crypto_ablkcipher_type, | |
1231 | .cra_module = THIS_MODULE, | |
1232 | .cra_init = ablk_ecb_init, | |
1233 | .cra_exit = ablk_exit, | |
1234 | .cra_u = { | |
1235 | .ablkcipher = { | |
1236 | .min_keysize = AES_MIN_KEY_SIZE, | |
1237 | .max_keysize = AES_MAX_KEY_SIZE, | |
1238 | .setkey = ablk_set_key, | |
1239 | .encrypt = ablk_encrypt, | |
1240 | .decrypt = ablk_decrypt, | |
1241 | }, | |
1242 | }, | |
1243 | }, { | |
1244 | .cra_name = "cbc(aes)", | |
1245 | .cra_driver_name = "cbc-aes-aesni", | |
1246 | .cra_priority = 400, | |
1247 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1248 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1249 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1250 | .cra_alignmask = 0, |
1251 | .cra_type = &crypto_ablkcipher_type, | |
1252 | .cra_module = THIS_MODULE, | |
1253 | .cra_init = ablk_cbc_init, | |
1254 | .cra_exit = ablk_exit, | |
1255 | .cra_u = { | |
1256 | .ablkcipher = { | |
1257 | .min_keysize = AES_MIN_KEY_SIZE, | |
1258 | .max_keysize = AES_MAX_KEY_SIZE, | |
1259 | .ivsize = AES_BLOCK_SIZE, | |
1260 | .setkey = ablk_set_key, | |
1261 | .encrypt = ablk_encrypt, | |
1262 | .decrypt = ablk_decrypt, | |
1263 | }, | |
1264 | }, | |
1265 | #ifdef CONFIG_X86_64 | |
1266 | }, { | |
1267 | .cra_name = "__ctr-aes-aesni", | |
1268 | .cra_driver_name = "__driver-ctr-aes-aesni", | |
1269 | .cra_priority = 0, | |
1270 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1271 | .cra_blocksize = 1, | |
1272 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1273 | AESNI_ALIGN - 1, | |
1274 | .cra_alignmask = 0, | |
1275 | .cra_type = &crypto_blkcipher_type, | |
1276 | .cra_module = THIS_MODULE, | |
1277 | .cra_u = { | |
1278 | .blkcipher = { | |
1279 | .min_keysize = AES_MIN_KEY_SIZE, | |
1280 | .max_keysize = AES_MAX_KEY_SIZE, | |
1281 | .ivsize = AES_BLOCK_SIZE, | |
1282 | .setkey = aes_set_key, | |
1283 | .encrypt = ctr_crypt, | |
1284 | .decrypt = ctr_crypt, | |
1285 | }, | |
1286 | }, | |
1287 | }, { | |
1288 | .cra_name = "ctr(aes)", | |
1289 | .cra_driver_name = "ctr-aes-aesni", | |
1290 | .cra_priority = 400, | |
1291 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1292 | .cra_blocksize = 1, | |
a9629d71 | 1293 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1294 | .cra_alignmask = 0, |
1295 | .cra_type = &crypto_ablkcipher_type, | |
1296 | .cra_module = THIS_MODULE, | |
1297 | .cra_init = ablk_ctr_init, | |
1298 | .cra_exit = ablk_exit, | |
1299 | .cra_u = { | |
1300 | .ablkcipher = { | |
1301 | .min_keysize = AES_MIN_KEY_SIZE, | |
1302 | .max_keysize = AES_MAX_KEY_SIZE, | |
1303 | .ivsize = AES_BLOCK_SIZE, | |
1304 | .setkey = ablk_set_key, | |
1305 | .encrypt = ablk_encrypt, | |
1306 | .decrypt = ablk_encrypt, | |
1307 | .geniv = "chainiv", | |
1308 | }, | |
1309 | }, | |
1310 | }, { | |
1311 | .cra_name = "__gcm-aes-aesni", | |
1312 | .cra_driver_name = "__driver-gcm-aes-aesni", | |
0bd82f5f TS |
1313 | .cra_priority = 0, |
1314 | .cra_flags = CRYPTO_ALG_TYPE_AEAD, | |
1315 | .cra_blocksize = 1, | |
fa46ccb8 JK |
1316 | .cra_ctxsize = sizeof(struct aesni_rfc4106_gcm_ctx) + |
1317 | AESNI_ALIGN, | |
0bd82f5f TS |
1318 | .cra_alignmask = 0, |
1319 | .cra_type = &crypto_aead_type, | |
1320 | .cra_module = THIS_MODULE, | |
0bd82f5f TS |
1321 | .cra_u = { |
1322 | .aead = { | |
1323 | .encrypt = __driver_rfc4106_encrypt, | |
1324 | .decrypt = __driver_rfc4106_decrypt, | |
1325 | }, | |
1326 | }, | |
fa46ccb8 JK |
1327 | }, { |
1328 | .cra_name = "rfc4106(gcm(aes))", | |
1329 | .cra_driver_name = "rfc4106-gcm-aesni", | |
1330 | .cra_priority = 400, | |
1331 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
1332 | .cra_blocksize = 1, | |
1333 | .cra_ctxsize = sizeof(struct aesni_rfc4106_gcm_ctx) + | |
1334 | AESNI_ALIGN, | |
1335 | .cra_alignmask = 0, | |
1336 | .cra_type = &crypto_nivaead_type, | |
1337 | .cra_module = THIS_MODULE, | |
1338 | .cra_init = rfc4106_init, | |
1339 | .cra_exit = rfc4106_exit, | |
1340 | .cra_u = { | |
1341 | .aead = { | |
1342 | .setkey = rfc4106_set_key, | |
1343 | .setauthsize = rfc4106_set_authsize, | |
1344 | .encrypt = rfc4106_encrypt, | |
1345 | .decrypt = rfc4106_decrypt, | |
1346 | .geniv = "seqiv", | |
1347 | .ivsize = 8, | |
1348 | .maxauthsize = 16, | |
1349 | }, | |
1350 | }, | |
fa46ccb8 | 1351 | #endif |
023af608 | 1352 | #ifdef HAS_PCBC |
fa46ccb8 | 1353 | }, { |
023af608 JK |
1354 | .cra_name = "pcbc(aes)", |
1355 | .cra_driver_name = "pcbc-aes-aesni", | |
fa46ccb8 JK |
1356 | .cra_priority = 400, |
1357 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1358 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1359 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1360 | .cra_alignmask = 0, |
1361 | .cra_type = &crypto_ablkcipher_type, | |
1362 | .cra_module = THIS_MODULE, | |
023af608 | 1363 | .cra_init = ablk_pcbc_init, |
fa46ccb8 JK |
1364 | .cra_exit = ablk_exit, |
1365 | .cra_u = { | |
1366 | .ablkcipher = { | |
023af608 JK |
1367 | .min_keysize = AES_MIN_KEY_SIZE, |
1368 | .max_keysize = AES_MAX_KEY_SIZE, | |
fa46ccb8 JK |
1369 | .ivsize = AES_BLOCK_SIZE, |
1370 | .setkey = ablk_set_key, | |
1371 | .encrypt = ablk_encrypt, | |
1372 | .decrypt = ablk_decrypt, | |
1373 | }, | |
1374 | }, | |
1375 | #endif | |
fa46ccb8 | 1376 | }, { |
023af608 JK |
1377 | .cra_name = "__lrw-aes-aesni", |
1378 | .cra_driver_name = "__driver-lrw-aes-aesni", | |
1379 | .cra_priority = 0, | |
1380 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1381 | .cra_blocksize = AES_BLOCK_SIZE, | |
1382 | .cra_ctxsize = sizeof(struct aesni_lrw_ctx), | |
1383 | .cra_alignmask = 0, | |
1384 | .cra_type = &crypto_blkcipher_type, | |
1385 | .cra_module = THIS_MODULE, | |
1386 | .cra_exit = lrw_aesni_exit_tfm, | |
1387 | .cra_u = { | |
1388 | .blkcipher = { | |
1389 | .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, | |
1390 | .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, | |
1391 | .ivsize = AES_BLOCK_SIZE, | |
1392 | .setkey = lrw_aesni_setkey, | |
1393 | .encrypt = lrw_encrypt, | |
1394 | .decrypt = lrw_decrypt, | |
1395 | }, | |
1396 | }, | |
1397 | }, { | |
1398 | .cra_name = "__xts-aes-aesni", | |
1399 | .cra_driver_name = "__driver-xts-aes-aesni", | |
1400 | .cra_priority = 0, | |
1401 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1402 | .cra_blocksize = AES_BLOCK_SIZE, | |
1403 | .cra_ctxsize = sizeof(struct aesni_xts_ctx), | |
1404 | .cra_alignmask = 0, | |
1405 | .cra_type = &crypto_blkcipher_type, | |
1406 | .cra_module = THIS_MODULE, | |
1407 | .cra_u = { | |
1408 | .blkcipher = { | |
1409 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
1410 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
1411 | .ivsize = AES_BLOCK_SIZE, | |
1412 | .setkey = xts_aesni_setkey, | |
1413 | .encrypt = xts_encrypt, | |
1414 | .decrypt = xts_decrypt, | |
1415 | }, | |
1416 | }, | |
1417 | }, { | |
1418 | .cra_name = "lrw(aes)", | |
1419 | .cra_driver_name = "lrw-aes-aesni", | |
fa46ccb8 JK |
1420 | .cra_priority = 400, |
1421 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1422 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1423 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1424 | .cra_alignmask = 0, |
1425 | .cra_type = &crypto_ablkcipher_type, | |
1426 | .cra_module = THIS_MODULE, | |
023af608 | 1427 | .cra_init = ablk_init, |
fa46ccb8 JK |
1428 | .cra_exit = ablk_exit, |
1429 | .cra_u = { | |
1430 | .ablkcipher = { | |
023af608 JK |
1431 | .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, |
1432 | .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, | |
fa46ccb8 JK |
1433 | .ivsize = AES_BLOCK_SIZE, |
1434 | .setkey = ablk_set_key, | |
1435 | .encrypt = ablk_encrypt, | |
1436 | .decrypt = ablk_decrypt, | |
1437 | }, | |
1438 | }, | |
fa46ccb8 JK |
1439 | }, { |
1440 | .cra_name = "xts(aes)", | |
1441 | .cra_driver_name = "xts-aes-aesni", | |
1442 | .cra_priority = 400, | |
1443 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1444 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1445 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1446 | .cra_alignmask = 0, |
1447 | .cra_type = &crypto_ablkcipher_type, | |
1448 | .cra_module = THIS_MODULE, | |
023af608 | 1449 | .cra_init = ablk_init, |
fa46ccb8 JK |
1450 | .cra_exit = ablk_exit, |
1451 | .cra_u = { | |
1452 | .ablkcipher = { | |
1453 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
1454 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
1455 | .ivsize = AES_BLOCK_SIZE, | |
1456 | .setkey = ablk_set_key, | |
1457 | .encrypt = ablk_encrypt, | |
1458 | .decrypt = ablk_decrypt, | |
1459 | }, | |
1460 | }, | |
fa46ccb8 | 1461 | } }; |
0bd82f5f | 1462 | |
3bd391f0 AK |
1463 | |
1464 | static const struct x86_cpu_id aesni_cpu_id[] = { | |
1465 | X86_FEATURE_MATCH(X86_FEATURE_AES), | |
1466 | {} | |
1467 | }; | |
1468 | MODULE_DEVICE_TABLE(x86cpu, aesni_cpu_id); | |
1469 | ||
54b6a1bd HY |
1470 | static int __init aesni_init(void) |
1471 | { | |
7af6c245 | 1472 | int err; |
54b6a1bd | 1473 | |
3bd391f0 | 1474 | if (!x86_match_cpu(aesni_cpu_id)) |
54b6a1bd | 1475 | return -ENODEV; |
8610d7bf | 1476 | #ifdef CONFIG_X86_64 |
d764593a TC |
1477 | #ifdef CONFIG_AS_AVX2 |
1478 | if (boot_cpu_has(X86_FEATURE_AVX2)) { | |
1479 | pr_info("AVX2 version of gcm_enc/dec engaged.\n"); | |
1480 | aesni_gcm_enc_tfm = aesni_gcm_enc_avx2; | |
1481 | aesni_gcm_dec_tfm = aesni_gcm_dec_avx2; | |
1482 | } else | |
1483 | #endif | |
1484 | #ifdef CONFIG_AS_AVX | |
1485 | if (boot_cpu_has(X86_FEATURE_AVX)) { | |
1486 | pr_info("AVX version of gcm_enc/dec engaged.\n"); | |
1487 | aesni_gcm_enc_tfm = aesni_gcm_enc_avx; | |
1488 | aesni_gcm_dec_tfm = aesni_gcm_dec_avx; | |
1489 | } else | |
1490 | #endif | |
1491 | { | |
1492 | pr_info("SSE version of gcm_enc/dec engaged.\n"); | |
1493 | aesni_gcm_enc_tfm = aesni_gcm_enc; | |
1494 | aesni_gcm_dec_tfm = aesni_gcm_dec; | |
1495 | } | |
8610d7bf | 1496 | #endif |
0bd82f5f | 1497 | |
fa46ccb8 JK |
1498 | err = crypto_fpu_init(); |
1499 | if (err) | |
1500 | return err; | |
54b6a1bd | 1501 | |
fa46ccb8 | 1502 | return crypto_register_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); |
54b6a1bd HY |
1503 | } |
1504 | ||
1505 | static void __exit aesni_exit(void) | |
1506 | { | |
fa46ccb8 | 1507 | crypto_unregister_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); |
b23b6451 AL |
1508 | |
1509 | crypto_fpu_exit(); | |
54b6a1bd HY |
1510 | } |
1511 | ||
1512 | module_init(aesni_init); | |
1513 | module_exit(aesni_exit); | |
1514 | ||
1515 | MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, Intel AES-NI instructions optimized"); | |
1516 | MODULE_LICENSE("GPL"); | |
1517 | MODULE_ALIAS("aes"); |